Boiler



(No Model.)

J. E. SGHLIEPER. BOILER.

No. 556,697. Patented Mar. 17, 1896.

Willi Hill lllll lm mm UNITED STATES PATENT EEicE.

JOIIN E. SCIILIEPER, OF PITTSBURG, PENNSYLVANIA, ASSIGNOR TO THE STIRLING COMPANY, OF CHICAGO, ILLINOIS.

BOILER.

SPEOIFICATIONforming part of Letters Patent No. 556,697, dated March 17, 1896.

Application filed August 16,1895. Serial No. 559,465. (No model.)

To aZZ whom it may concern.-

Be it known that I, J OHN E. SCHLIEPER, a citizen. of the United States, residing at Pittsburg, in the State of Pennsylvania, have invented a new and useful Improvement in Boilers, of which the following is a specification.

My invention relates to that class of Watertube boilers in which the water circulates throughout the entire boiler system and the invention consists in the features and combinations hereinafter described and claimed.

In the accompanying drawing, which is a vertical sectional elevation of my improved boiler, A is the lower mud-drum; B, an elevated feed-drum, and B an elevated waterdrum; C, an elevated steam and water drum; D, banks of tubes connecting the several drums; E, the fire-chamber, and F fire-brick partitions or shelves adjacent to or between the several banks of tubes.

In constructing my improved boiler I make the drums, banks of tubes and fire-brick partitions of the usual material and in the usual way, but I arrange the parts with reference to each other in such a way as to secure results, especially as to circulation of water and generation of steam, materially different from anything heretofore attained in boiler practice.

The feed-water is introduced into a waterdrum,which I call a feed-drum, and which is located in an elevated position with reference to the mud-drum. From the feed-drum the water passes forward and downward to the lower mud-drum, thence forward and upward to the front water-drum, which is also elevated with reference to the mud-drum, thence backward and upward to the steam and water drum which is still more elevated and directly above the mud-drum, and thence backward and downward to the feed-drum, allowance being of course made for evaporation. This would be the natural course of the circulation if it were not for the substantially vertical bank of tubes connecting the lowermud-d rum and the upper steam and water drum, but this bank materially affects the circulation, generation of steam, the.

Suitable fire-brick partitions and shelves are arranged adjacent to or between the banks of tubes to direct the flame or heated gases preferably in such way as to cause them to pass along and among the tubes so as to completely envelop and heat the same throughout at least part of their length.

A deflecting plate or partition I) may be placed in the feed-drum in such position that the feed-water coming in below the same will be naturally directed toward the muddruin. A similar plate or partition a may be placed in the mud-drum in such position as to require the water to pass in below the same and thus deposit a large part of its sediment before entering the forward tubes or parts of the boiler.

Although I prefer to use the middle bank of tubes, connecting the mud-drum with the upper steam and water drum, still this bank may in some case be omitted, and additional drums may be used or the position or relation of the drums with reference to each other changed to suit special requirements or circumstances; and, generally, changes may be made and parts used or omitted, as desired, and so I do not wish to be understood as limiting myself further than pointed out in the claims to special details or forms or arrangement or location of parts.

I claim 1. In a water-tube boiler, the combination of four drums and five banks of tubes, each of the outer drums receiving the ends of two banks of tubes and each of the inner drums the ends of three banks of tubes, whereby water may circulate through all the drums and tubes, and one of the outer drums having a deflecting-plate therein in position to re- "quire feed-water to pass forward to the lower inner drum, and the lower inner drum having a deflecting-plate therein in position to arrest sedimentary matter to prevent its passing into the forward parts of the boiler, substantially as described.

2. In a water-tube boiler, the combination of an elevated feed-drum, a lower mud-drum, an elevated \\-'ater-druni, an elevated steam and water drum, banks of tubes connecting the several drums, and a bank of tubes in the central part of the boiler connecting the lower mud -drum and elevated steam and water drum, all the drums being on a plane higher than the furnace or fire-chamber, substautially as described.

3. In a Water-tube boiler, the combination plate or partition to aid in depositing sediof an elevated feed-drum, a lower mud-drum, ment before the Water passes into the forward I 0 an elevated water-drum, an elevated steam parts of the boiler, substantially as described. and Water drum, and banks of tubes connect- 5 ing the several drums, the feed-drum being J OIIN E. SCHLIEPER.

provided with an interior plate or partition to Vitnesses: direct the water into the mud-drum, and the ALBERT J. WVALKER,

mud-drum being provided with an interior 0. A. WILLIAMS. 

